Stop device for rod shears



v.,F.'| lNDER kSTOP DEVICE FOR Rop sHEARs Fld March 31. 1949 VICTOR F.V"LIN`VDER ATTORNEYS Patented Aug. 25, 1953 UNITED STATES rar NT OFFICE STOP DEVICE FOR ROD SHEARS Application March 31, 1949, Serial No. 84,513

8 Claims.

My invention relates to stop devices for rod shears and has for an object to provide a device whereby rods may be quickly and easily cut to length by merely feeding the rod into the shear and manipulating the cutting head of the shear.

An object of the invention resides in providing a stop device particularly adapted to be used with a shear having a fixed shear plate and a reciprocable shear plate cooperating therewith and formed with registering holes through which the rod to be cut may be projected and in which the plates overlie one another and the movable shear plate moves laterally of the holes of the xed plate and carries the cut portion of the rod with it.

Another object of the invention resides in providing a stop device in which the cut portion of the rod may be ejected by feeding the uncut portion of the rod into the shear.

A still further object of the invention resides in providing a stop device with a stop piece having a surface engageable with the end of the rod being cut and in slidably and pivotally mounting the stop piece for movement toward and from the shear and in a direction out of the path of movement of the cut piece during ejection thereof.

An object of the invention resides in providing a stop device in which the stop piece is moved away from its normal position by engagement 'with the cut portion of the rod in the return movement of the movable shear plate.

Another object of the invention resides in providing thestop device with a mounting having a lslot therein and in pivotally and slidably supporting the stop piece in said slot.

A still further object ofthe invention resides in constructing the stop piece with a part adapted to enter the guide and to restrain swinging movement of the stop piece when the stop piece is in one of its positions.

Other objects of the invention reside in the novel combination and arrangement of parts and in the details of construction hereinafter illustrated and/or described. f

In the drawings:

Fig.,l is an elevational view of a rod shear illustrating an embodiment of my invention applied thereto.

Fig. 2 is a plan sectional view taken on line 2-2 of Fig. 1.

Fig. 3 is a sectional elevational view taken on line 3.-3 of Fig. 1.

Figs. 4, 5 and 6 are viewssimilar to, Fig. 3 showing the parts in altered positions.

Fig. '7 is a sectional view taken on line I-l of Fig. 1 and drawn to a greater scale.

Figs. 8 and 9 are plan views similar to Figs. 4 and 6 with portions of the keeper removed and drawn to the same scale as Fig. '7.

For the purpose of illustrating my invention I have shown in the drawing a rod shear I0 which is of the hand operated type. This shear comprises a base I l having a shear block I2 mounted thereon. The block I2 is in the form of a flange and is integral with the base II and projects upwardly therefrom. At the uppermost portion of the shear block I2 is formed a cylindrical socket I3 in which is disposed a xed cylindrical shear plate Irl. Shear plate Ill is held from rotation insaid socket by means of dowel pins I5 which extend through the said shear plate and also through the portion I6 of the shear block lying immediately in back of the plate I4. Said plate is held in position by means of llister head screws Il which are received in counterbored holes I8 in the portion I of shear block I2 and which screw into the plate H. The exposed face oi the shear plate I4 projects outwardly beyond the surface of the shear block I2 for a purpose to be presently described. The screws I'I and the dowel pins I5 alternate with one another and are disposed well beneath the exposed face of the shear plate.

Cooperating with the shear plate I4 is a movable :cylindrical shear plate I9 which fits in a cylindrical socket 2| and formed in a shear head 22.V Shear head 22 is pivoted to the shear block I2 by means of a bolt or pintle 23 which extends through holes 24 and 25 drilled into shear plates I4 and I9 at the axes of the same. The shear plate I9 is attached to the head 22 in the same manner as the shear plate lli by means of dowel pins 2S and screws 2l. The bolt 23 has a head 28 which engages the outer surface of the shear plate I9 and a threaded end 29 extending outwardly beyond the shear block I2. On this portion of the bolt are screwed a nut SI and a jam nut 32 which hold the two plates Ill and I9 with the facing surfaces of the same in contact. EX- tending through both the plates I4 and I9 are holes 33 which are adapted to register with one another and which are of different sizes as illustrated in Fig. 1. When a rod of proper dimensions is inserted into the corresponding holes 33 and the shear head 22 given a slight amount of rotation about the bolt 23 relative to one another the rod is sheared off.

For the purpose of operating the shear head 22 the said head is formed with an arm 34 extend-y 3 ing outwardly therefrom. A lever 35 has an arm 36 and an arm 3l and is pivoted by means of a bolt 38 to the end of the arm 34. The arm 3l has pivoted to it by means of a bolt 39 one end of a link 4I which link is pivoted at its other end by means of a bolt 42 to a portion 43 of the shear block I2. A handle 44 is mounted on a rod 45 which rod is secured within a socket 45 formed in the end of the arm 36` of lever 35. This rod is held in position by means ofV a set screw dl screwed into the arm 36. It will readily be seen that by swinging the lever 35 from the position shown in full lines in Fig. 1 to that shownzinldot-4 ted lines in said gure, that the shear head 22 rocks a small amount and moves-the holesl 33 in the plate I circumferentially with respect to the corresponding holes in plate I4 tocause a-rod in#- serted through any of said holes to be sheared off at the meeting surfaces of the two plates I4" and I9.

The invention proper comprises a sup-port i which is in the nature of' a cylindrical rod and which extends through a hole 52 in the shear block I2. This rod may be adjusted transversely of the shear andis heldin adjustedposition by means of a set screw` 53' screwed into the shear block I2.

The invention further comprises a bracket 5d which isrdrilled as indicated at 55 to receive the rod 5I. The said bracket has a slit 55 formed in the same which intersects the hole 55 leaving two spaced parts 5l and 58. A cap screw 55 passes through the part 58 and is threaded into the part 57' and serves to bring these parts together to clamp the bracket 54 upon the rod 5i.

The free end of the bracket' 55 has attached to it a mounting 51. Mounting. 5I is in theA form-of a short rectangular bar and is threaded to receive the threaded shank of a-cap-screw t2 which passes through the outer endof the bracket 54. The mounting 5I as best shown in Figs. 8 and 9 is ormedwith a transverse groove 63 at its outermost end and which forms a guide for slidably supporting a stop piece G4. Stop piece lill asshown in Fig. '7 is constructed-from aA short bar and is milled transversely across the underside thereof to provide a transversegroove therein designated at 65.- This construction forms a shoulder 66 and a lug lspaced from said-shoulder a distance greater thanV the width` of the mounting SI. The groove 53 is of'V substantially the same width as the stop piece 54 andthe intervening portion 68Y of the saidstop piece bee tween the shoulder 65 and lug 5l is of substantially the samethickness as the depth of said groove. @verlying the stop piece 54`is'a keeper Si@ which is secured to thel end of the mounting- GI by'means ofA cap screws 'II which'passthrough inthe same onthe opposite sidel thereof. When thel parts are disposed as shownv in Fig. G'or'9I the stop piece may swing a limited amount'fronr the position shownA inv Fig. 8 to thatshown in Fig. 9. The corner I'fforrned by the notch' 'i2 serves as a latch-for restraining lateralmovementof the stop piece 64- when'the portion of said stop piece having the corner l2v enters into the groove 53. The parts are thenlatchedand. the

stop piece restrained from swinging movement. The stop piece 613 is held in the position shown in Figs. 3 and 7 by means of a spring l5. This spring passes through a hole I5 in the mounting 6l and has a key Il bent outwardly therefrom and which is clamped in position between the said mounting and the bracket 54. The other end 'E8 of spring I5 extends loosely through a hole 'E9 in the stop piece 54. Spring l5 is sotensioned that the said spring urges the stop piece to swing in `a clockwise direction as viewed in Fig. 3 and to move toward the shear. The stop piece 54 has a recess SI' formed in the same providing a beveled surface S2 which intersects the surface 83 at' the end` 3E of the stop piece and which is the surface adapted to be engaged by the rod to be sheared. Whenvthe stop piece 54 is moved to the position shown in Figs, 6 and 9 the surface 82 is substantially parallel to the axis of the rod being sheared.

The method of `operation ofthe invention'- is as follows:

rlhe surface 8350i the stop piece G4 is adjusted so that the same comes opposite the hole 33 cor.- responding to the size of the rod'to be sheared. This may be accomplished by loosening screw 55 and turning the bracket 55 abouty the axis of the rod 5l and by loosening the screw 62 and similarly rotating the mounting 61 about the. axis thereof. When positionedT to correspond with one pair of the holes 33 the; parts become dis.- posed' as shown in Fig. 1. At the same time the bracket 54 is moved along the rod. 5I so that the distance between theV shearing surfaces,- of the. shear plates I4 and I5 and the surface33iof1said stop` piece when thestop pieceV isfinthe position shown in Fig. 8 willbeV the same length'. asthe length ofi thesheared part ofthe rod; When a rod is to be shearedthe. same is directed through' the registering holes-.in ,the'shearplates as shown inFig. 3. InlEligsB- to'f a rodbeing sheared is'` designated by the numeral 841 The rodupon being. further advanced engages the surface 83A of!y the stoppiece {i4-and moves'th'e sameaway. from the shear imtil the shoulder 5B engages the mounting 5I". The parts. then become arranged as shown in Figs. 5 and 8. While so holding the rod 84:. the handle 44'y may be manipulated and the shear head 22rotated'relative to the blockr I2'to shear oi the rod. During such movement: the-cut portion 350i the rod-moves vwith the shear head 22 sliding along the surface 83 until the said rodclears the end 85- of the stop piece; In Fig. 5 the cut por-tion ofr the -rod is justI aboutto' clear the surface 83. Thecut portion may'now travel beyondth'e saidstopipiece. As soonas thei cut portion'85 of the rod clears the surface 83, the. spring 'i5 forces the stop piece back to thel position shown inFig l. Thev cut portion llimay now engage theY surface 82 of thel stopy piece; When the handle 44 is moved-in reverse direction' the saidstoppiece is`- swung rearwardly untilit reaches the position shown in Fig. 6 in whichl the sheared portion is inV alignment withL the'- rod proper. The rod 84 may-then-be-fed-throughl the holes 33 pushing the cut portionaheadiof it. Asy soon as the' cut portion clears themovable shearv plate, spring 5exer-ts pressure onlthe cut' portion 85 tending to move it away from the-uncut portion of the rodandaided by gravity ejects the cut portion fom the shear. As'soonas this occurs-the stop piece Eli-immediatelyips back into alignment with the particular-hole through which-the rodf is-.projected and? the surface'SS is in positionztdengagezthe.new endof the ro'd' 84 as the rod is advanced through the machine. The stop piece 64 is thenin the position shown in Fig. 3 and is ready to intercept the movement of said rod to cut off the next portion of the rod.

Changes in the specic form of my invention, as herein described, may be made Within the scope of what is claimed Without departing from the spirit. of my invention.

Having describedmy invention, what I claim as new vand desire to protect by Letters Patent is:

1. In a stop device for use with a rod shear, said device including a support, a mounting carried by said support, a stop piece having a surface for engagement with the end of a rod being sheared, guide means on said mounting for guiding said stop piece for movement in the direction of the length of the rod and along the path of movement thereof, said surface of the stop piece in the normal position of the stop piece being nearest said shear, a shoulder on said stop piece limiting movement of the same away from the shear, said stop piece having a reduced portion accommodating independent limited lateral movement Within said guide when the stop piece is in normal position and resilient means urging said sto'ppiece ytoward normal Aposition and resisting lateral movement thereof in one direction.

2. In a stop device for use Vvvith a rod shear, said device including a support, a mounting carried by said support, a groove in said mounting parallel with the axis of the rod being sheared, an elongated stop piece slidable along said groove and having an end surface for engagement With the end of the rod being sheared, a shoulder on said stop piece adapted to engage said support to limit movement of said surface away from said shear, said stop piece having a notch in the same at the locality of said shoulder and accommodating independent lateral movement of said stop piece, said stop piece having a part adapted to be received in said slot prior to engagement of the shoulder With the mounting and restraining lateral movement of the stop piece in all directions and resilient means for urging said stop piece toward said shear and for resisting lateral movement of the stop piece when in normal position in one direction.

3. A stop device for use with a rod shear having a fixed shear plate and a movable shear plate formed with registering holes through Which the rod to be cut may be projected and in which the plates overlie one another and the movable shear plate moves laterally of the hole in the fixed plate in a certain direction to cut the rod and carries the cut portion of the rod with it, said stop device including a support xed relative to the shear, a mounting on said support, a guide in said mounting having a guideway extending in the direction of the length of the rod being cut, a stop piece slidably and pivotally mounted in said guideway and having a surface for engagement with the end of the rod being cut, a shoulder on said stop piece adapted to engage said mounting to limit movement of said stop piece toward said mounting and a part on said stop piece adapted to enter said guidevvay and engage said guide to restrain pivotal movement of the stop piece when the shoulder is in engagement with the mounting and resilient means for resisting sliding and pivotal movement of said stop piece. Y

4. A stop device for use With a rod shear, said device including a support, a mounting carried by said support and having a surface facing the shear and 'an oppositely facing surface, Ysaid mounting being formed with ya groove extending across the same and through said surfaces, astop piece disposed in said groove and slidable therein, said stop piece having an end surface for engagement with the end of the rod being sheared, a shoulder on said stop piece for engagement with one of said surfaces to limit movement of the stop piece in one direction, another shoulder on said stop piece adapted to engage the other surface of said mounting to limit movement of the stop piece in the opposite direction, said stop piece being reduced in Width at certain localities with respect to said groove to accommodate lateral movement of the same and resilient means for urging movement of said stop piece to bring one of said shoulders in engagement with the corresponding surface of said mounting.

5. A stop device for use with a rod shear, said device including a support, a mounting carried by said support andhaving a surface facing the shear and Vanv oppositely facing surface, said mounting being formed with a groove extending across the same and through said surfaces, a stop piece disposed in said groove and slidable therein, said stop piece being of a thickness greater than the depth of said groove and having a transverse groove therein making the thickness of said stop piece at said grooveless than the depth of the first named groove and forming on said stop piece oppositely facing shoulders for engagement with the oppositely facing surfaces of said mounting, said second named groove being of a Width greater than the length of said first named groove to accommodate sliding movement of said stop piece along said first named groove, a keeper overlying said mounting and closing said first named groove to form a guide for said stop piece and resilient means for moving said stop piece laterally in the groove in said mounting.

6. A stop device for use with a rod shear, said device including a support, a mounting carried by said support, a groove in said mounting parallel with the `axis of the rod being sheared, an elongated stop piece slidable along said groove and having an end surface for engagement with the end of the rod being sheared, a shoulder on said stop piece adapted to engage said support to limit movement of said surface away from said shear, said stop piece having a notch in the same at the locality of said shoulder and accommodating lateral movement of said stop piece, said stop piece in one position being in alignment with said rod and in another position inclining away from said rod, said stop piece having a recess therein providing a surface extending substantially parallel with the axis of said rod when said stop piece is in its second named position and adapted to receive the sheared portion of the rod and resilient means for urging said stop piece laterally in said groove and in a direction to bring said stop piece into inclining position With reference to the rod.

7. A stop device for use with a rod shear having a fixed shear plate and a movable shear plate formed with registering holes through which the rod to be cut may be projected and in which the plates overlie one another and the movable shear slidably." and' pivotalliy mounted in said't guidevva'yY and having a surface for engagement Withth'e end of therodbeing cut, a shoulderf'onfsa-idstop piece adapted to` engage said. mounting to limitI movement of said stop piece toward' saidtmountling, said stop piecelbeing reduced in Width'with respect to saidk guide ati certain localities to4 accommodate lateral swinging of said* stop. piece out of alignment With. the axis of the rod said stop piece having a` surface thereon adapted toA be engaged bythe. cut part of' the'rod in there turn movementv of saidmovable shear plate and to bemove'd out of alignment by said portion of' therodto permit the uncut portion of therod to engage theV cutportion and" ej ect the. cuty portion from the movable shear plateiand'resilient means. for. urging said stop'piece toward the positionk in which it is outof alignment Withtherod;

8. Ina stop device for useiwith.a reeiprocating rod shear to determine the length of the" rodssheared, said device including a support, a

mounting carried by said supportand havinga` groove thereinforming. in said mounting;y lateral walls parallel With the axis of the rodY being. sheared and disposed substantially atirightangles to the direction of movement of the shear plate; an elongated stop piece slidable alongsad groovev and having surfaces engaging the denoted walls of said mounting formedby said groove. andreand in the direction` of the return movement of the shear plate Whenthe stop piece is in its most protrudedpositionisaid notchreceiving a portion of. the'. support at'. one.' endf ofv the: groove and resilient means for. urging-:said stop. piece toward itsLmost protruded positionandin the direction of the cutting-'movement' ofV the shear plate.

VICTOR'AF.' LINDER.

References Citedinthe file of this patent UNITED STATES PATENTS Name Date' Lyon May 28, 1867 Searls Dec. 3; 1872 Dunwald Juner 20,I 1876 Treat Jan. 27, La Rock May 7',

Number lVIelinl Oct. 27, 1936 Hazelton July 14, 1936 

